Sulphurs were in the clincH tailwater in the sixties when l first fished it." Old Darts "did try to nring montana stoneflies to the Little T in a cooler from the Madison in the sixties. Some petronarcus type big stoneflies were already here in little river in the park and are in the cumberland tailwater in ky naturally. Some mayflies were attempted to be moved from the Little T to the clinch by amateurs like me in the 70s. Unsuccessfully. Please do not try to bring any more itty bitty stuff to the clinch. Bring great big stuff. Truth is some fish in clinch can be caught on about anything short of tarpon flies if u stAnd there and drag it around on fine leaders long enough. Note i said some fish. Not all fish. Fwiw